Portable elevator.



PATENTBDDEG. 15, 1903.

J G. BROWN.

PORTABLE ELEVATOR.

APPLI'OATION FILED SEPT. 19. 1903.

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7 PATENTED DEC. 15, 1903. J G. BROWN.

PORTABLE ELEVATOR.

' APPLICATION FILED SEPT. 19, 1903.

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PATENTED DEC. 15, 1903.

J G. BROWN. PORTABLE ELEVATOR. APPLIUATIGN FILED SEPT. 1a. 1903. no MODEL. 3 SHBETSSHEET 3 6 .7, Zfl v a? x W 6 I 48 28 was D467 in 7 :I c 7 D 4/ Q I; 27 Z UNITED STAT S I Patented December 15, 1903.

PATENT EIC J eRovE BROWN, OF JERSEY CITY, NEW JERSEY, "AssIeNoR To. JULIAN SOHOLL & COMPANY, on NEW YORK, N. Y.

PORTABLE ELEVATOR.

SBEGIEIGA'IION forming part of Letters Patent No. 747,044, dated December 15, 1903.

Application filed September 19, 1903. Serial No. 173,848. (No model.)

To all whom, it may concern.-

Beit known that I, J GROVE BROWN, acitizen of the United States, residing at Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Portable Elevators,

portable elevators especially adapted for use in connection with portable rockcrushers and designed to elevate the product of the crushing-machine, so as to deliver it into wagons, cars, bins, screens, or other receptacles.

The various features of the invention and the operation will be plain from the following description, taken in connection with the accompanying drawings, in which- Figurel is a side elevation of the elevator applied to a portable rock-crusher, one of the rear wheels of the vehicle being removed and the elevator being shown in its folded position ready for transportation. plan view of the elevator, showing also the rear vehicle-wheels and the fiy-wheels of the crusher, the body of the crusher being omit-,

ted. Fig. 3 is a side view similar to the view shown in Fig. 1,with the elevator partly raised.

Fig. lis a similar view showing the elevator in operative position. Fig. 5 is an enlarged,

plan view of a portion of the apparatus, illustrating the form and arrangement of the winding-drums. Fig. 6 is a detailed view of the standards which guide the elevator-frame when the latter is being lowered and which support the forward portion of said frame when the latter is in its horizontal position,

and Fig. 7 is a perspective view of a part of the lower section of the elevator and the guides along which it moves.

Referring to the drawings, A indicates a portable rock -crusher,' having a deliverychute 1 for the'crushed rock projecting downwardly and rearwardly from the rear end of.

the crusher-frame 2. The vehicle-wheels are Fig. 2 is a are connected together at their upper ends by a rod or shaft 5, upon which the main section of the elevator-frame is pivoted, as will be hereinafter described. These parallel supporting-arms 3 and 4 are preferably made of channeled steel beams, as shown. The upper ends of the supporting-arms 3 and 4. are braced by downwardly and forwardly inclined angle-bars 6 and 7, respectively,and short angle-bars 8, which project rearwardly and horizontally from the crusher-frame and are secured to the bars 6 and 7. The bars 6 and 7, which form guideways for the lower section of the elevator, are inclined at the angle which it is desired to have the elevator assume when erected.

The elevator-frame comprises an upper or main section B, which is journaled between its center and rear end upon the shaft 5.

the upper edges ofthe beams ll'and 12 of the upper section and at their rear ends projects beyond thesides of said beams, and when the elevator is in its raised position this cross-piece rests against the side pieces of the lower section and 'forms therewith a stop which limits the rearward movement of the upper section, as shown in Fig. 4.. Upon "the forward side of the lower section are secured guide-pieces 17, which hold the lower section upon the guide-bars 6 and 7 and permit the said section to move freely up and down thereon. The upper and lower sections 5 are connected by a pair of parallel. links 18, which are pivoted, as shown in Figs'l and 3, to lugs 19 upon the upper edges of the upper frame-section in the rear of the shaft 5 and to lugs 20 upon the rear edges of the side we bars of the lower frame-section.

It will be apparent from an inspection of Figs. 1, 3, and 4 that when the upper section is raised from the horizontal position shown in Fig. 1 the lower section will be automatic'ally moved downward upon its guides to a distance depending upon the length and points of connection ofthe links 18 with the upper section. The points of connection of the links 18 are, however, arranged so that when the elevator is in its raised position (shown in Fig. 4) the conveyer-chain 21, carrying an endless series of buckets 22, will be held sufficiently taut for practical use between a driving-sprocket 23 at the upper end of th'eupper section and awheel 24, jo'urnaled at the lower end of the lower section. A driving-shaft 25 is journaled in suitable bearings 26 upon the cross-piece 16 at the rear or lower end of the upper section, and this shaft is provided with a driving-pulley 27, which when the elevator is in operative position maybe belted to a pulley 28 upon the flywheel shaft of the rock-crusher. The endless series of buckets is operated in the direction of the arrow, Fig. 4, by means of a sprocket-wheel 29 upon the shaft 25, which is engaged by a drive-chain 30, passing over a sprocket-wheel 31 upon the shaft 32 at the upper or forward end of the upper section, which shaft carries the driving-sprocket 23, the latter engaging theconveyer-chain 21.

7 It will be noticed that when the elevator is in operative position (shown in Fig. 4) the buckets extend below the wheels of the vehicle,and hence a slight excavation (indicated by theuumeral 33) is made in the ground to affordlsufficient clearance-space for the buckets. The chute 1 delivers the crushed rock into the buckets,which carry it up over the topof the elevator-frame and drop it into whatever receptacle is provided to receive the crushed rock or a chute leading to such receptacle. When the elevator is lowered for transportation, as will be seen from Figs. 1 and 3, the lower section of the elevator and the buckets are automatically raised to a sufficient distance toclear the road or obstructions nponthe road. When the upper section is brought to the horizontal position, its forward portion is guided by standards 34, having outwardly-flaring upper ends 35, onto stops or rests 36, secured to the adjacent faces of said standards.

, In order to raise and lower the elevator, a winding-shaft 37 is arranged transversely at therear end of the crusher-frame in suitable bearings, and upon this shaft are arranged three winding-drums 38, 39, and 40. The winding-shaft is operated by means of a hand-crank 41 upon a crank-shaft 42, which is geared to the winding-shaft by means of a pinion 43 upon the crank-shaft-and a gear 44 upon the winding-shaft. A pair of chains or cables 45 and 46 are connected to suitable fastening devices 47 at the rear or lower end of the upper section of the elevator-frame, and these chains pass through the lower frame-section and are secured to the smaller ends of the conical drums 38 and 40, respectively. It will be evident that as the chains or cables 45 and 46 are wound upon the drums the upper section of the elevator-frame will turn about its axisinto the vertical position. As the chains 45 and 46 areconnected to the smaller ends of the drums the leverage is greatest when the upper section of the frame is at or near its horizontal position and when the greatest leverage is required to move it. It will be evident that when the upper section of the elevator passes the vertical position the center of gravity of this section and the apparatus which it carries will pass to the rear of its pivotal shaft 5 and the upper section would swing backward heavily until its lower end came in contact with the lower section, causing considerable shock and possible injury to the apparatus if some means were not provided for steadying the movement of the upper section while passing from the vertical position toits rearward1y-inclined op-' erative position. With this object in view a chain or cable 48 has one of its ends secured to the smaller end of the conical drum 39 upon thewinding-shaft, and the opposite end of this chain or cable is connected to the center of a short chain or cable 49, the ends of which are detachably connected by hooks to eyes 50, secured to the beams 11 and 12 of the upper frame-section in front of the pivotal point of the latter. This short chain forms a loop,which extends around the chain of buckets and supports a portion of the latter when the upper section of the elevatorframe is in the horizontal position or in any position between the horizontal and the vertical. The pitch radii of the drums 38 and 40 are so proportioned with reference to the pitch radius of the drum 39 that as the chains 45 and 46 are wound onto the drums 38 and 40 in the act of raising the elevator frame the chain upon the drum 39 will pay 06 only fast enough to keep the chain 48 taut, or nearly so. It is important to have the chain 48 taut when the center of gravity of the elevator frame shifts to the rear of its pivotal point, thus steadying the movement of the frame until it reaches its final position,

with the lower end of the upper section resting against the stop-piece 16 on the lower section. Until the elevator reaches a position approximately vertical it is not, of course, essential to keep the chain 48 taut; but it is desirable to proportion the drums so that this chain will not hang loosely and interfere with the erection of the elevator. When the elevator is in operative position, the short loopchain 49, which is at the end of the chain 48 and forms a part thereof, is detached from the elevator, so as not to interfere with the operation of the buckets. In lowering the elevator the reverse movement of the winding-drum causes the chain 48 to pull the upper frame-section forward until its centerof gravity passes forward of the pivotal shaft, while thechains 45 and 46 prevent the frame from falling forward while passing over the center and restrain it until it reaches the horizontal position.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. In a portable elevator,'a suitable support, an upper frame-section pivoted to said support and adapted to swing in a vertical plane, guideways extending downwardly below the axis of said upper section, a lower frame-section movable upon said guideways, and an endless series of buckets extending around both frame-sections.

2. The combination with a portable rockcrusher, a support projecting upwardly and rearwardly from the crusher-frame, and inclined guideways arranged at the rear of the crusher-frame, of an elevator comprising an upper frame-section pivoted to said support and adapted to swing in a vertical plane, a lower frame-section movable upon said guideways, and an endless series of buckets extending around both of said sections.

3. In a portable elevator, a suitable support, an upper frame-section pivoted to said support and adapted to swing in a vertical plane, guideways extending downwardly belowthe axis of the upper section, a lower frame-section movable upon said guideways, and means for automatically moving the lower section upwardly when the upper section approaches the horizontal position and downwardly when the upper section moves to the vertical position.

4. In a portable elevator, a suitable support, an upper frame-section pivoted to said support and adapted to swing in a vertical plane, guideways extending downwardly below the axis of the upper section, a lower frame-section movable upon said guideways, and link connections between said lower section and the lower part of the upper section.

5. In a portable elevator, a suitable support, an upper frame-section pivotally connected thereto and movable about a horizontal axis, guideways'extending downwardly below said axis, a lower frame-section movable upon said guideways, link connections between said lower section and the lower portion of the upper section, a winding-drum and means for operating the same, and a chain or cable connecting said drum with the upper section below its axis.

6. In a portableelevator, a suitable support, an upper frame-section pivotally connected thereto and movable about a horizontal axis, guideways extending downwardly be low said axis, a lower frame-section movable upon said guideways, link connections be tween said lower section and the lower portion of the upper section, two chains or cables connected to said upper section below and above its axis, respectively, and winding mechanism to which said cables are connected adapted to wind one of said cables and simultaneously unwind the other of said cables.

*7. In-a portable elevator, a suitable support, an upper frame-section pivotally connected thereto and movable about ahorizontal axis, guideways extending downwardly below said axis, a lower framesection movable upon said guideways, link connections between said lower section and the lower portion of the upper section, two coned windingdrums and means for simultaneously operating the same, a chain or cable connecting the upper frame-section below its axis with the smaller end of one of said drums, and a chain or cable connecting the upper frame-section above its axis with the smaller end of one of said drums.

8. In a portable elevator, a suitable sup port, an upper framesection pivotally connected thereto and movable aboutahorizontal axis, guideways extending downwardly below said axis, a lower frame-section movable upon said guideways, link connections between said lower section and the lower portion of the upper section, a driving-shaft journaled transversely on the lower part of the upper section, a sprocket-wheel shaft arranged at the upper end of said section and geared to said driving-shaft, and an endless series of buckets extending around both sections.

9. The combination with a portable stonecrusher, of a support projecting upwardly and rearwardly from the crusher body or frame, guideways extending downwardly at the rear of the crusher, an elevator-frame comprising an upper section journaled upon said support and movable in a vertical plane and a lower frame-section movable upon said guideways, below the axis of the upper section, link connections between said sections, an endless series of buckets extending around both sections, and winding mechanism arranged to turn the upper section about its axis.

10. The combination with a portable stonecrusher, ofasupport projecting upwardly and rearwardly from the crusher body or frame, guideways extending downwardly at the rear of the crusher, an elevator-frame comprising an upper section journaled upon said support and movable in a vertical plane and a lower frame-section movable upon said guideways, below the axis of the upper section, a stop arranged to limit the rearward movement of the upper section, link connections between said sections, an endless series of buckets extending around both sections, and winding mechanism arranged to turn the upper section about its axis.

11. In a portable elevator, the combination witha suitable support, of a sectional elevator having an upper section pivoted to said support and movable in a vertical plane, an endless series of buckets extending longitudinally around said frame, means for rotating said upper section about its axis, a chain or cable having an end portion detachably connected to said upper section above its axis and forming a loop to support the-buckets when the elevator is being raised, and winding mechanism to which said chain or cable is connected.

12. In a portable elevator, the combination with a suitable support, of a sectional elevator having an upper section pivoted to said support and adapted to swing in a vertical plane, inclined guideways arranged below the axis of said upper section, a lower frame-sectionrnovable upon said guideways, an endless series of buckets extending around both of said sections, and a device connected to the upper section between its axis and upper or forward end and forminga support for the series of buckets.

13. The combination with a portable rockcrusher, ofa support projecting upwardly and rearwardly from the crusher-frame, inclined guideways arranged at the rear of the crusherframe, an elevator comprising an upper frame-section pivoted to said support and movable in a vertical plane, a lower section movable upon saidguideways, an endless series of buckets extending around both of said sections, a chain or cable connected to said upper section above its axis, and winding mechanism to which said chain or cable is connected.

14. In a portable elevator, a suitable support, an upper frame-section pivotally connected thereto and movable about a horizontal axis, guideways extending downwardly below said axis, a lower frame-section movable upon said guideways, link connections between said lower section and the lower portion of the upper section, a pair of windingdrums and chains or cables connecting said drums with the upper section below its axis, awinding-drum and a chain or cable connecting the latter with the upper section above its axis, and means for simultaneously operating said drums.

15. The combination with a portable rockcrusher having a delivery-chute at its rear end, a support arranged at the rear of the crusher frame, and guideways extending downwardly at the rear of the crusher-frame, of an elevator comprising an upper framesection journaled on said support, a lower frame-section movable on said guideways, connections between said upper and lower frame-sections, and an endless series ofbuckets extending around both frame-sections.

In testimony whereof I affix my signature in presence of two witnesses.

. J GROVE BROWN. vWitnesses:

JOHN J. BOLAND, M. RUTROLZ. 

